/* b.out object file format
- Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
-
+ Copyright (C) 1989, 90, 91, 92, 93, 94, 95, 1996
+ Free Software Foundation, Inc.
+
This file is part of GAS, the GNU Assembler.
-
+
GAS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2,
or (at your option) any later version.
-
+
GAS is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
the GNU General Public License for more details.
-
+
You should have received a copy of the GNU General Public
License along with GAS; see the file COPYING. If not, write
- to the Free Software Foundation, 675 Mass Ave, Cambridge, MA
+ to the Free Software Foundation, 59 Temple Place - Suite 330, Cambridge, MA
02139, USA. */
/*
* are in host byte-order: object files CANNOT be lifted from a
* little-end host and used on a big-endian (or vice versa) without
* modification.
+ * ==> THIS IS NO LONGER TRUE USING BFD. WE CAN GENERATE ANY BYTE ORDER
+ * FOR THE HEADER, AND READ ANY BYTE ORDER. PREFERENCE WOULD BE TO
+ * USE LITTLE-ENDIAN BYTE ORDER THROUGHOUT, REGARDLESS OF HOST. <==
*
* o The downloader ('comm960') takes care to generate a pseudo-header
* with correct (i80960) byte-ordering before shipping text and data
#define OBJ_BOUT 1
-#include "targ-cpu.h"
-
-/* bout uses host byte order for headers */
-#ifdef CROSS_COMPILE
-#undef CROSS_COMPILE
-#endif /* CROSS_COMPILE */
+#define OUTPUT_FLAVOR bfd_target_aout_flavour
-/* We want \v. */
-#define BACKSLASH_V 1
+#include "targ-cpu.h"
#define OBJ_DEFAULT_OUTPUT_FILE_NAME "b.out"
extern const short seg_N_TYPE[];
-extern const segT N_TYPE_seg[];
+extern const segT N_TYPE_seg[];
#define BMAGIC 0415
/* We don't accept the following (see N_BADMAG macro).
* 'n' indicates the corresponding segment must begin at an
* address that is a multiple of (2**n).
*/
-struct exec {
- /* Standard stuff */
- unsigned long a_magic; /* Identifies this as a b.out file */
- unsigned long a_text; /* Length of text */
- unsigned long a_data; /* Length of data */
- unsigned long a_bss; /* Length of runtime uninitialized data area */
- unsigned long a_syms; /* Length of symbol table */
- unsigned long a_entry; /* Runtime start address */
- unsigned long a_trsize; /* Length of text relocation info */
- unsigned long a_drsize; /* Length of data relocation info */
-
- /* Added for i960 */
- unsigned long a_tload; /* Text runtime load address */
- unsigned long a_dload; /* Data runtime load address */
- unsigned char a_talign; /* Alignment of text segment */
- unsigned char a_dalign; /* Alignment of data segment */
- unsigned char a_balign; /* Alignment of bss segment */
- unsigned char unused; /* (Just to make struct size a multiple of 4) */
-};
+struct exec
+ {
+ /* Standard stuff */
+ unsigned long a_magic; /* Identifies this as a b.out file */
+ unsigned long a_text; /* Length of text */
+ unsigned long a_data; /* Length of data */
+ unsigned long a_bss; /* Length of runtime uninitialized data area */
+ unsigned long a_syms; /* Length of symbol table */
+ unsigned long a_entry; /* Runtime start address */
+ unsigned long a_trsize; /* Length of text relocation info */
+ unsigned long a_drsize; /* Length of data relocation info */
+
+ /* Added for i960 */
+ unsigned long a_tload; /* Text runtime load address */
+ unsigned long a_dload; /* Data runtime load address */
+ unsigned char a_talign; /* Alignment of text segment */
+ unsigned char a_dalign; /* Alignment of data segment */
+ unsigned char a_balign; /* Alignment of bss segment */
+ unsigned char a_relaxable; /* Contains enough info to relax */
+ };
#define N_BADMAG(x) (((x).a_magic)!=BMAGIC)
#define N_TXTOFF(x) ( sizeof(struct exec) )
/* A single entry in the symbol table
*/
-struct nlist {
- union {
- char *n_name;
- struct nlist *n_next;
- long n_strx; /* Index into string table */
- } n_un;
- unsigned char n_type; /* See below */
- char n_other; /* Used in i80960 support -- see below */
- short n_desc;
- unsigned long n_value;
-};
+struct nlist
+ {
+ union
+ {
+ char *n_name;
+ struct nlist *n_next;
+ long n_strx; /* Index into string table */
+ }
+ n_un;
+ unsigned char n_type; /* See below */
+ char n_other; /* Used in i80960 support -- see below */
+ short n_desc;
+ unsigned long n_value;
+ };
typedef struct nlist obj_symbol_type;
/* Legal values of n_type
*/
-#define N_UNDF 0 /* Undefined symbol */
-#define N_ABS 2 /* Absolute symbol */
-#define N_TEXT 4 /* Text symbol */
-#define N_DATA 6 /* Data symbol */
-#define N_BSS 8 /* BSS symbol */
-#define N_FN 31 /* Filename symbol */
+#define N_UNDF 0 /* Undefined symbol */
+#define N_ABS 2 /* Absolute symbol */
+#define N_TEXT 4 /* Text symbol */
+#define N_DATA 6 /* Data symbol */
+#define N_BSS 8 /* BSS symbol */
+#define N_FN 31 /* Filename symbol */
-#define N_EXT 1 /* External symbol (OR'd in with one of above) */
-#define N_TYPE 036 /* Mask for all the type bits */
-#define N_STAB 0340 /* Mask for all bits used for SDB entries */
+#define N_EXT 1 /* External symbol (OR'd in with one of above) */
+#define N_TYPE 036 /* Mask for all the type bits */
+#define N_STAB 0340 /* Mask for all bits used for SDB entries */
#ifndef CUSTOM_RELOC_FORMAT
-struct relocation_info {
- int r_address; /* File address of item to be relocated */
- unsigned
- r_index:24,/* Index of symbol on which relocation is based*/
- r_pcrel:1, /* 1 => relocate PC-relative; else absolute
+struct relocation_info
+ {
+ int r_address; /* File address of item to be relocated */
+ unsigned
+ r_index:24, /* Index of symbol on which relocation is based*/
+ r_pcrel:1, /* 1 => relocate PC-relative; else absolute
* On i960, pc-relative implies 24-bit
* address, absolute implies 32-bit.
*/
- r_length:2, /* Number of bytes to relocate:
+ r_length:2, /* Number of bytes to relocate:
* 0 => 1 byte
* 1 => 2 bytes
* 2 => 4 bytes -- only value used for i960
*/
- r_extern:1,
- r_bsr:1, /* Something for the GNU NS32K assembler */
- r_disp:1, /* Something for the GNU NS32K assembler */
- r_callj:1, /* 1 if relocation target is an i960 'callj' */
- nuthin:1; /* Unused */
-};
+ r_extern:1, r_bsr:1, /* Something for the GNU NS32K assembler */
+ r_disp:1, /* Something for the GNU NS32K assembler */
+ r_callj:1, /* 1 if relocation target is an i960 'callj' */
+ nuthin:1; /* Unused */
+ };
+
#endif /* CUSTOM_RELOC_FORMAT */
/*
/* True if symbol has been defined, ie is in N_{TEXT,DATA,BSS,ABS} or N_EXT */
#define S_IS_DEFINED(s) ((S_GET_TYPE(s) != N_UNDF) || (S_GET_DESC(s) != 0))
+
+#define S_IS_COMMON(s) \
+ (S_GET_TYPE (s) == N_UNDF && S_GET_VALUE (s) != 0)
+
#define S_IS_REGISTER(s) ((s)->sy_symbol.n_type == N_REGISTER)
/* True if a debug special symbol entry */
#define S_IS_DEBUG(s) ((s)->sy_symbol.n_type & N_STAB)
/* True if a symbol is local symbol name */
-/* A symbol name whose name begin with ^A is a gas internal pseudo symbol
- nameless symbols come from .stab directives. */
-#define S_IS_LOCAL(s) (S_GET_NAME(s) && \
- !S_IS_DEBUG(s) && \
- (S_GET_NAME(s)[0] == '\001' || \
- (S_LOCAL_NAME(s) && !flagseen['L'])))
+#define S_IS_LOCAL(s) \
+ ((S_GET_NAME (s) \
+ && !S_IS_DEBUG (s) \
+ && (strchr (S_GET_NAME (s), '\001') != NULL \
+ || strchr (S_GET_NAME (s), '\002') != NULL \
+ || (S_LOCAL_NAME(s) && !flag_keep_locals))) \
+ || (flag_strip_local_absolute \
+ && !S_IS_EXTERNAL(s) \
+ && S_GET_SEGMENT(s) == absolute_section))
/* True if a symbol is not defined in this file */
#define S_IS_EXTERN(s) ((s)->sy_symbol.n_type & N_EXT)
/* True if the symbol has been generated because of a .stabd directive */
#define S_IS_STABD(s) (S_GET_NAME(s) == NULL)
/* Accessors */
-/* The value of the symbol */
-#define S_GET_VALUE(s) ((unsigned long) ((s)->sy_symbol.n_value))
/* The name of the symbol */
#define S_GET_NAME(s) ((s)->sy_symbol.n_un.n_name)
/* The pointer to the string table */
#define S_GET_DESC(s) ((s)->sy_symbol.n_desc)
/* Modifiers */
-/* Set the value of the symbol */
-#define S_SET_VALUE(s,v) ((s)->sy_symbol.n_value = (unsigned long) (v))
/* Assume that a symbol cannot be simultaneously in more than on segment */
/* set segment */
#define S_SET_SEGMENT(s,seg) ((s)->sy_symbol.n_type &= ~N_TYPE,(s)->sy_symbol.n_type|=SEGMENT_TO_SYMBOL_TYPE(seg))
#define S_SET_OTHER(s,v) ((s)->sy_symbol.n_other = (v))
/* Set the n_desc expression value */
#define S_SET_DESC(s,v) ((s)->sy_symbol.n_desc = (v))
+/* Set the n_type value */
+#define S_SET_TYPE(s,v) ((s)->sy_symbol.n_type = (v))
/* File header macro and type definition */
#define H_SET_VERSION(h,v) ((h)->header.a_version = (v))
#endif /* EXEC_VERSION */
-/*
- * Current means for getting the name of a segment.
- * This will change for infinite-segments support (e.g. COFF).
- */
-#define segment_name(seg) ( seg_name[(int)(seg)] )
-extern char *const seg_name[];
+typedef struct
+ {
+ struct exec header; /* a.out header */
+ long string_table_size; /* names + '\0' + sizeof(int) */
+ }
-typedef struct {
- struct exec header; /* a.out header */
- long string_table_size; /* names + '\0' + sizeof(int) */
-} object_headers;
+object_headers;
/* unused hooks. */
#define OBJ_EMIT_LINENO(a, b, c) {;}
#define obj_pre_write_hook(a) {;}
-#ifdef __STDC__
+#if __STDC__
struct fix;
-void tc_aout_fix_to_chars(char *where, struct fix *fixP, relax_addressT segment_address);
-#else
-void tc_aout_fix_to_chars();
-#endif /* __STDC__ */
-
-/*
- * Local Variables:
- * comment-column: 0
- * fill-column: 131
- * End:
- */
+#endif
+extern void tc_aout_fix_to_chars PARAMS ((char *where,
+ struct fix *fixP,
+ relax_addressT segment_address));
+extern void tc_bout_fix_to_chars PARAMS ((char *where,
+ struct fix *fixP,
+ relax_addressT segment_address));
+
+#define AOUT_STABS
/* end of obj-bout.h */
projects / binutils.git / blobdiff